权威例句
Lead frame including angle iron tie barLead frame including angle iron tie barSafety hook for work in height on angle iron frame iron towerWork-aloft protecting device used on angle iron frame iron towerCollapsible multi-level palletImplement for gathering objects from the soilApparatus for packing fruitLab-Scale Zero Exchange Shrimp AquacultureReusable concrete support frameExperimental study on mechanical property of a new type of sandwich wall
